- SPORE moved into gui directory by default.

gui/Protocols/yahalom-lowe.spdl

@@ -0,0 +1,56 @@
+# Lowe's modified version of Yahalom
+#
+# Modelled after the description in the SPORE library
+# http://www.lsv.ens-cachan.fr/spore/yahalomLowe.html
+#
+#
+
+secret k : Function;
+
+usertype SessionKey;
+
+
+protocol yahalom-Lowe(I,R,S)
+{
+    role I
+    {
+        const Ni: Nonce;
+        var Nr: Nonce;
+        var Kir: SessionKey;
+
+        send_1(I,R, I,Ni);
+        read_3(S,I, {R,Kir,Ni,Nr}k(I,S) );
+        send_5(I,R, {I, R, S, Nr}Kir );
+
+        claim_I1(I, Secret,Kir);
+        claim_I2(I, Nisynch);
+    }
+
+    role R
+    {
+        const Nr: Nonce;
+        var Ni: Nonce;
+        var Kir: SessionKey;
+
+        read_1(I,R, I,Ni);
+        send_2(R,S, {I,Ni,Nr}k(R,S) );
+        read_4(S,R, {I,Kir}k(R,S));
+        read_5(I,R, {I, R, S, Nr}Kir);
+
+        claim_R1(R, Secret,Kir);
+        claim_R2(R, Nisynch);
+    }
+
+    role S
+    {
+        const Kir: SessionKey;
+        var Ni,Nr: Nonce;
+
+        read_2(R,S, {I,Ni,Nr}k(R,S) );
+        send_3(S,I, {R,Kir,Ni,Nr}k(I,S));
+        send_4(S,R, {I,Kir}k(R,S));
+    }
+}
+
+const Alice,Bob,Simon : Agent;
+